Roll



Dec. 8; 1936. c L 2,063,608

' ROLL Original Filed May 25 1934 ATTORNEY.

Patented Dec. 8, 1936 PATENT OFFICE ROLL Archibald C. Lade, Northampton, Mass assignor to B. F. Perkins & Son, Inc., Holyoke, Masa, a corporation of Massachusetts Application May 25,

1934, Serial No. 127,391

Renewed .May 18, 1936 2 Claims.

This invention relates to improvements in rolls and has for its principal object the provision of roll apparatus which is adapted for embossing and other operations where webs of paper, fabric, and the like are acted upon by coacting pressure rolls. v

as paper, textiles, and the like, it is common practise to employ an embossing or pattern roll, usually composed of metal for the sake of rigidity, which carries on its surface the design or pattern to be imparted to the web or sheet. A mating roll coacts therewith and as the web or sheet is passed between the rolls, the design carried by the first-named roll is impressed therein. The latter roll which may be. referred to as an embossing roll must be capable of withstanding the pressure of the former roll in order to produce the desired embossing effects.

The embossing roll is .very often made after the manner of the so-called filled roll where flbrous materials are held under pressure between flanges or heads adjacent opposite ends of a shaft. This produces a roll body which is less pattern roll. While fibrous materials may be desirable for the reason that the surface of the embossing roll is somewhat resilient yet in the embossing operation the pattern of the pattern roll is produced in the peripheral surface of the filled roll. This is objectionable for several reasons among which is the necessity for having a roll to mate with each different pattern roll.

I To attain the objects and advantages of the invention an embossing roll is provided, the body of which is composed of such materials that the body has the necessary rigidity to coact with the pattern roll while its surface is sufficiently resilient to coact with that of the pattern roll-without the pattern being permanently set therein or at least not to an objectionable extent, the surface resiliency not only distinguishing the roll from prior art rolls but being capable by reason thereof to efficiently operate with the pattern roll.

Various novel objects and advantages of the invention are accomplished in a novel way as will hereinafter more fully appear andfor the purposes of disclosure reference will be had to the accompanying drawing wherein:

The figure is a side elevational view, partly in section, of coacting rolls embodying the novel features of the invention.

Referring now to the drawing more in detail, the invention will be fully described.

0 represents a roll embodying the features of In embossing webs and sheets of all kinds, such rigid than and relatively more yieldable than the the invention'and E represents a' pattern roll or a roll which carries a pattern, design, or ornamentation, such as D, to be imparted to webs or sheets passed between the rolls when they are mounted for rotation in coacting relation.

The roll E has a more or less rigid body 2 which may be of metal and journals 4 at opposite ends thereof facilitate the joumalling of the roll in suitable bearings. The roll C includes a shaft or mandrel 6, a body 8, and flanges or headers Ill.

The roll body 8 of the roll C is preferably formed by stacking a plurality of sections or laminations S in superposed relation about the shaft 6 and pressing the body endwise under considerable pressure and then locking the material comprising the body between the headers or flanges l0, and securing them to the shaft 6 in the usual well-known manner.

The body 8 formed by the sections or laminations as distinguished from the pattern roll E is preferably less rigid and to coact with the roll E its peripheral surface, or at least its peripheral portion, is resilient or yieldable as distinguishe from the surface of the roll E.

As the webs or sheets to be embossed are passed. between the rolls the pattern carried by the roll E is pressed thereinto so that it is offset more or less and for the most satisfactory embossing operations the surface of roll C must conform to or mate with the surface of roll E. Therefore the roll C i's'relatively yieldable or resilient to accomplish this without the pattern being permanently set in the roll C.

To provide the necessary rigidity and at the same time the necessary resiliency with respect to the roll. body 8.the laminations or sections S comprising the same are of a novel nature.

As distinguished from sections of paper, fabric, or thellike which may be yieldable to a limited degree only, the sections or laminations, according 'to this invention, include fibrous material having as a constituent part thereof rubber, gutta percha, rubber composition, rubber latex, and similar materials. Fabric 'and paper having as aconstituent part thereof such material as rubber latex are suitable for the practise of the invention.

To incorporate the material in the roll body, the material may be mixed with paper-making material in a beating operation. That is to say, during the beatingof the paper-making material which may be ragstock, sulphite, or other well known paper-making materials or mixtures thereof the resilient material is associated therewith and then when the mixture of paper-making material and resilient material are formed into sheets or webs, they have incorporated therein the resilient material.

In another way, the resilient materials such as rubber latex may be incorporated in the fibrous materials such as paper and fabric by impregnation. This may be accomplished by calendering or other pressure operations. In any event, it is desired that the resilient material be substantially uniformly dispersed throughout the paper or fabric for forming into the laminations or sections.

With the roll body thus formed from laminations or sections which include the resilient material, when the roll is turned to the desired diameter to have the desired surface, the surface of the roll is relatively yieldable, the resilient material imparting a degree of the resiliency to the body.

The degree of resiliency obtainable by the use of laminations or sections having the resilient material as a constituent is variable and will depend, of course, upon the amount of resilient material in the sections or laminations. It may be" desirable to employ sections of laminations which have more or less resilient material combined therewith with other sections which have more or less resilient material or are free of the resilient material.

With the roll C having the resilient surface and.

with the body which is sufllciently rigid to coact with the ornamented rolr, the em operation is not only enhanced, but, by reason of the yieldability of the surface of the embossing roll, the said roll has a longer life than that of ordinary rolls of the prior art.

While I have described the invention in great detail and with respect to a preferred form thereof, it is not desired to be limited thereto since many changes and modifications may be made therein without departing from the spirit and scope of the invention.

What it is desired to claim and secure by Letters Patent of the United States is:

1. As a new article of manufacture, a roll of the class described for coacting with an embossing roll comprising in combination, a horizontal shaft and a relatively resilient body on said shaft including a plurality of superposed disc-like sections of fibrous material impregnated with rubber latex which are compressed together and disposed on said shaft vertically relative thereto.

2. As a new article of manufacture, a roll of the class described for coacting with an embossing roll comprising in combination, a horizontal shaft and a relatively resilient body on said shaft including a'plurality of superposed disc-like sections of paper impregnated with rubber latex which are compressed together and disposed on 

